Adobe PDF is an ideal file format to protect author's copyright and authority due to its user and owner password. You may have deal with all kinds of electronic files in the daily life. Thus in order to protect these vital information, you may have set different password for different documents and one day you may find that you have confused by these different password, and you can't open the file while you're in urgent. Therefore, Vibosoft PDF Password remover helps decrypt all the restrictions of your PDF files. Remove restrictions on PDF copying, editing, and printing directly. Support 40-bit RC4, 128-bit RC4, 128-bit AES decryption. Remove PDF Open Password with the right authorized password. Allows to decrypt up to 400+ PDF files at one time and doesn't crash.